Die



J. F. BEANS.

DIE.

APPLlc/mou FILED Novx 29. 1921.

Patented Nov. 231, 1922.

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J. F. BEANS.

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APPLICATION HLED Nov. 29. 1921,.

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APPLICATION FILED NOV. 29,1921.

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JOHN I". BEANS, OF CANTON, OHIO, ASSIGNOR TO THE BEANS SPRING COMPANY,OE'

MASSILLON, OHIO, CORPORATON DF OHIO.

Application led November 29, 1921. Serial No. 518,518.

To all whom it concern.'

Be it known that I, JOHN F. BEANS, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented a new and useful Die, of which the following is aspecification.

This invention relates to improvements in dies and more particularly todies for shearing, punching and trimming steel spring plates such as areused for vehicle springs.

With devices of this kind at present in use, it is customary to firstshear the steel plates, then punch the center holes therein upon anothermachine, finally trimming the ends of the plate upon a trimming press,four distinct operations being necessary to complete each spring plateor leaf.

rThe objects of the invention are to provide a die adapted to coldshear, trim and punch steel spring plates or leaves, forming a completeplate or leaf with each operation.

With these objects in view, the invention consists in the constructionand arrangement of parts, hereinafter described and illustrated intheaccompanying drawings, it being understood that various changes inthe form and details of construction may be made within the scope of theappended claims.

A preferred embodiment of the invention is disclosed in the accompanyingdrawings, in which- Figure 1 is a side elevation of a portion of a pressshowing the dies embodying the invention mounted therein, the upper diebeing shown in its lowered position,aspring plate or leaf being locatedbetween the dies;

Fig. 2, a side elevation of the upper die, parts being broken away forthe purpose of illustration g Fig. 8, a bottom plan view of the same;

Fig. t, a section on the lines 4-4, Figs. 2 and 3;

Fig. 5, a top plan view of the lower die;

Fig. 6, a section on the line 6 6, Fig. 5;

Fig. 7, a section on the line 7 7, Figs. 5 and 6;

Fig. 8, a longitudinal sectional view through both dies inthe closedposition;

Fig. 9, a perspective view of the lower trimming and shearing dies, withone of the trimming` dies removed; and

Fig. 10, a detached, perspective view of one of t-he lower trimmingdies.

Similar numerals of reference indicate corresponding parts throughoutthe drawings.

The device includes the lower stationary die comprising the shoe l whichis arranged to be tixedly mounted upon the base or anvil of any suitableform of press, such as is indicated generally at 2, and the uppermovable die comprising the punch holding block 3 which is carried in thereciprocating head i of the press and arranged to be moved toward andfrom the lower die by the operation of the press.

The upper surface of the shoe 1 is flat as shown at the angular guidebrackets 6 and 7 being mounted upon opposite sides of the longitudinalcenter thereof, preferably toward the end from which the stock A, fromwhich the spring' plates or leaves are stamped, is passed into thedevice.

Forthe purpose of clamping the sto'ck against movement, upon the shoe,as the upper die descends, a lever 10 is pivoted near one end betweenthe brackets 11 which are mounted upon the upper surface of the shoe.This lever is provided with the downwardly disposed, inner end 12arranged to engage the adjacent side edge of the stock, forcing thestock against the opposite guide bracket 7 when the outer end of thelever is lowered. A counterweight 13 is mounted upon the outer endportion of the lever for the purpose of normally holding the Same inposition to engage the stock, a chain 14 connecting the outer extremityof the lever with the reciprocating head a of the press, providing meansfor raising the outer end of the lever to disengage the inner endthereof from the stock when the reciprocating head is raised.

The shoe 1 is provided at its longitudinal center with spaced intervalswith cylindric sockets 15 which receive the punch buttons 16, theupperextremities thereof extending above the upper surface of the shoe.Each of these punch buttons is provided with the downwardly `flaredcentral opening 17 communicating at its lower end with the enlarged bore1S estending` through the bottom of the shoe.

rlhe lower trimming and shearing dies 19 are located in a socket 2Oformed in the upper face of the shoe, each of said dies being of theshape best shown in Figs. 9 and 10, being provided upon their inneredges screws 26 which are passed through thestripper plates 27 andthrough said blocks and into the shoe. These stripper plates are oftheshape best shown in Fig. 5, being` provided with the reduced, tapered,inwardly disposed portions 28 located above the tapered portions of thelower trimmingand shearing dies. The stripper plates are thus spacedabove the trimming and shearing dies a sutlicient distance to permit thestock to be easily passed beneath the same.

Downwardly flared openings 29 are provided in the reduced portions 22 ofthe dies 19 and communicate at their lower extremities with the enlargedbores 30 extending through the bottom of the shoe 1. These downwardlyflared apertures .provide punch holes to receive the rebound holepunches, as will be later described, the stripper plates 27 being`provided. with enlarged openings 31 above said punch holes to allow therebound punches to pass therethrough. V

A pair of spaced gaugebars 32 are connected to the end of the shoeopposite from the punch buttons by means of the downwardly disposedangular portions 33, screws 34 or the like attaching` the same to theeX- tremity of the shoe. These gauge bars are located in alignment withthe shoe 1, and are provided at spaced intervals with the apertures 35arranged to selectively receive the screws 36 carried upon the gauge 37for the purpose of locating this gauge at any desired distance from theshearing and trimming dies necessary for forming spring plates or leavesof different lengths.

The punch holder studs 33 are provided with the enlarged heads 39received within the countersunlr openings 40 provided in the punchholder plate 41 which is attached to the punch holder block 3 by meansof the screws 42 or the like. These punch holder studs are located in'positions corresponding` lwith the punch buttons 16 and with the reboundpunch openings 29.

The center hole punch 43 is arranged to be selectively connected to anyof the punch studs 38, corresponding with the punch bottoms 16, by meansof the punch holder nut 44. The rebound hole punches 45 which are'similar in construction to the center hole punch, are mounted upon thecorresponding punch holder studs by means of similar' punchholder nuts44.

The upper trimming and shearing .die 46, as best shown. in Fig. 3, isshaped to correspond with the reduced tapered portions 22 of the lowershearing and trimming dies and is connected to the plates 47 as by therivet 48, said plates being located upon opposite sides of the die, thelower ends thereof extending beyond the bottom of the dies, theseplates, together with the die 46, are arranged to be received throughthel opening 24 in the shoe, the end portions of the plates beingreceived in the cut-out por-i tions 21 of the lower shearing andtrimming dies.

rl`he upper' ends of the die 46 and plates 47 are provided with thebeveled flanges 43 which are received in the countersunl; opening 49provided in the punch holder plate 41, this die being held in positionupon the punch block 3 by means of the screws 42 which secure the punchholder plate to the block.

ln operating the device, the reciprocating head 4 is raisedin the usualmanner, raisw ing with it the punch block 3 and upper die, and throughthe chain 14, raising the outer end ofthe lever 10, permitting the stockA to be passed through the device between the guide brackets and7 andbeneath the stripper plates 27. 'When the stock is placed in the properlocation, the reciprocating head 4 is lowered in the usual manner, thecounterweight 13 moving the outer end of the lever 10 downwardly as thechain 14 is slackened, bringing the inner curved extremity 12 of thelever into engagement with the edge of the stock, forcing the sametightly against the bracket 7 and holding the stock against accidentalmovement as the punch block and upper die engage the same.

It will be seen that with each operation of the device, the centerholeand one rebound hole are punched and one end of a plate is formed andsheared, while at the same time, the opposite end of the next precedingleaf or plate is sheared and trimmed and the center hole punched. Aftereach operation of the device, the stock is fed forwardly through themachine until the end thereof engages the gauge `37. 'A spring plate orleaf is thus completed with each operation of thev device.

lt will be seen that the center hole punch 43 ymay be mounted upon anydesired punch holder' stud, the gauge 37 being located accordingly inorder to stamp spring leaves or plates of desired length. With thedevice shown, it will be seen that six different lengths of spring plateor leaf may ne obtained by adjustment of the device.

The advantage over the usual method of forming spring plates or leaveswill be readily apparent from the above, as the four separate operationsof shearing, trimming,

punching the center hole, and punching the rebound holes are allcombined in one single operation of the present device, and a completespring being formed with each operaion thereof` l claim l.. A device oi.the character described including a Xed shoe, lower trimming andshearing dies near one end thereof arranged to shear and trim oppositeends of two adjacent spring plates, each of the lower dies being`provided with an aperture, a vertically movable block above the shoe,upper shearing and trimming dies arranged to cooperate with the lowershearing and trimming dies and punches mounted upon the upper shearingand trimming dies arranged to engage said apertures to punch the reboundholes in opposite ends of the spring plates.

2. A device of the character described in cluding a fixed shoe, lowershearing and trimming dies near one end thereof arranged to shear andtrim opposite ends of two adjacent spring plates, each of the lower diesbeing provided with an aperture, a punch button near the other end ofthe shoe, a vertically movable block above the shoe, upper shearing andtrimming dies arranged to cooperate with the lower shearing and trimmingdies and a punch upon said block arranged to cooperate with the punchbutton to form the center hole in a spring plate, and punches mountedupon the upper shearing and trimming dies arranged to engage saidapertures to punch the rebound holes in opposite ends of the springplates,

ln testimony that l claim the above, l have hereunto subscribed my name.

JOHN F. BEANS.

